This video from New York State in the USA says about itself:
12 December 2016
Watch as a Downy Woodpecker experiences a genuine American Goldfinch invasion on the Cornell Lab FeederWatch Cam! It’s not surprising considering the feeders currently offer some of their favorite options: black oil sunflower, nyjer seed, and hulled sunflower. Goldfinches are among the strictest vegetarians in the bird world, selecting an entirely vegetable diet and only inadvertently swallowing an occasional insect.
Watch LIVE at http://AllAboutBirds.org/CornellFeeders for news, updates, and more information about the pond and its surroundings.
This FeederWatch cam is located in the Treman Bird Feeding Garden at the Cornell Lab of Ornithology.